CVE-2026-23437

A flaw was found in the Linux kernel's net: shaper module. This vulnerability arises from a missing liveness check during Netlink operations when a network device netdev is referenced and subsequently accessed. If the netdev is unregistered before the access, it can lead to a use-after-free...

CVE-2026-23436

In the Linux kernel, the following vulnerability has been resolved: net: shaper: protect from late creation of hierarchy We look up a netdev during prep of Netlink ops pre- callbacks and take a ref to it. Then later in the body of the callback we take its lock or RCU which are the actual...

CVE-2026-23436

The CVE-2026-23436 issue affects the Linux kernel's net: shaper component. A race could occur when a netdev is unregistered between taking a reference during Netlink prep and locking/RCU in the callback, potentially leaking the hierarchy after a flush. The fix applies the instance lock in pre- st...

CVE-2025-71182 can: j1939: make j1939_session_activate() fail if device is no longer registered

In the Linux kernel, the following vulnerability has been resolved: can: j1939: make j1939sessionactivate fail if device is no longer registered syzbot is still reporting unregisternetdevice: waiting for vcan0 to become free. Usage count = 2 even after commit 93a27b5891b8 "can: j1939: add missing...

CVE-2025-71182

In the Linux kernel, the following vulnerability has been resolved: can: j1939: make j1939sessionactivate fail if device is no longer registered syzbot is still reporting unregisternetdevice: waiting for vcan0 to become free. Usage count = 2 even after commit 93a27b5891b8 "can: j1939: add missing...

Linux Distros Unpatched Vulnerability : CVE-2025-71182

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - can: j1939: make j1939sessionactivate fail if device is no longer registered syzbot is still reporting unregisternetdevice: waiting for vcan0 to become free...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

MiracleLinux 9 : kernel-5.14.0-611.13.1.el9_7 (AXSA:2025-11544:99)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11544:99 advisory. kernel: can: j1939: implement NETDEVUNREGISTER notification handler CVE-2025-39925 kernel: net/mlx5: fs, fix UAF in flow counter release...

kernel: can: j1939: implement NETDEV_UNREGISTER notification handler

A flaw was discovered in the J1939 protocol implementation in the Linux kernel. The NETDEVUNREGISTER notification handler was missing for undoing changes performed by j1939skbind. As a result, an extra reference remains on the j1939priv structure when unregistering a network device, preventing it...

AlmaLinux 9 : kernel (ALSA-2025:22865)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:22865 advisory. kernel: can: j1939: implement NETDEVUNREGISTER notification handler CVE-2025-39925 kernel: net/mlx5: fs, fix UAF in flow counter release CVE-2025-39979...

Oracle Linux 9 : kernel (ELSA-2025-22865)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-22865 advisory. - can: j1939: add missing calls in NETDEVUNREGISTER notification handler CKI Backport Bot RHEL-124105 CVE-2025-39925 - can: j1939: implement...

kernel security update

An update is available for kernel. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel packages contain the Linux kernel, the core of any Linux operating...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

RHEL 9 : kernel (RHSA-2025:22865)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:22865 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: j1939: implement...

Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: can: j1939: implement NETDEVUNREGISTER notification handler CVE-2025-39925 kernel: net/mlx5: fs, fix UAF in flow counter release CVE-2025-39979 For more details about the security issues,...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988897)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988897 advisory. In the Linux kernel, the following vulnerability has been resolved: net: macsec: Fix offload support for NETDEVUNREGISTER event Current macsec netdev notify handler...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987571)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987571 advisory. In the Linux kernel, the following vulnerability has been resolved: net: macsec: Fix offload support for NETDEVUNREGISTER event Current macsec netdev notify handler...

Linux Distros Unpatched Vulnerability : CVE-2025-39925

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - can: j1939: implement NETDEVUNREGISTER notification handler syzbot is reporting unregisternetdevice: waiting for vcan0 to become free. Usage count = 2 problem,...

CVE-2025-39925

In the Linux kernel, the following vulnerability has been resolved: can: j1939: implement NETDEVUNREGISTER notification handler syzbot is reporting unregisternetdevice: waiting for vcan0 to become free. Usage count = 2 problem, for j1939 protocol did not have NETDEVUNREGISTER notification handler...

CVE-2025-39925

In the Linux kernel, the following vulnerability has been resolved: can: j1939: implement NETDEVUNREGISTER notification handler syzbot is reporting unregisternetdevice: waiting for vcan0 to become free. Usage count = 2 problem, for j1939 protocol did not have NETDEVUNREGISTER notification handler...